He is still weighing his options in filling the posts of state and defence.

Mr Mnuchin amassed a fortune over 17 years at Goldman Sachs investment bank, before founding a movie production company that was behind such box office hits as the X-Men franchise and American Sniper.

It remains to be seen whether Mr Trump's first key economic policy move, potentially picking a consummate Wall Street insider to helm the nation's financial system, will be welcomed by supporters who were energised by the Republican's vow to "drain the swamp" of special interests.

Billionaire investor Wilbur Ross - known as "the king of bankruptcy" for his restructuring of failing industries - is tipped to be named as Mr Trump's commerce secretary.